Global Patent Index - EP 1998595 A4

EP 1998595 A4 20140402 - CERAMIC HEATER AND GLOW PLUG

Title (en)

CERAMIC HEATER AND GLOW PLUG

Title (de)

KERAMISCHE HEIZUNG UND GLÜHSTIFT

Title (fr)

CORPS DE CHAUFFE EN CERAMIQUE ET BOUGIE DE PRECHAUFFAGE

Publication

EP 1998595 A4 20140402 (EN)

Application

EP 07739197 A 20070320

Priority

  • JP 2007055754 W 20070320
  • JP 2006077867 A 20060321

Abstract (en)

[origin: EP1998595A1] There are provided a ceramic heater in which a defect, such as generation of a gap at the interface between an insulating substrate and a heat-generating resistor, is unlikely to occur in the course of manufacture or use, and a glow plug using the ceramic heater. A ceramic heater 110 includes an insulating substrate 111 extending in the direction of an axis AX and a heat-generating resistor 115, which has a heat-generating portion 116, two lead portions 117, 117 and two lead lead-out portions 118a and 118b. The ceramic heater 110 satisfies an expression S1 ‰¤ 0.34Sa, where Sa is the area of a cross section of the ceramic heater 110 taken perpendicular to the direction of the axis AX, and S1 is the total cross-sectional area of the two lead portions 117, 117 as measured in the cross section.

IPC 8 full level

H05B 3/03 (2006.01); F23Q 7/00 (2006.01); H05B 3/10 (2006.01); H05B 3/14 (2006.01); H05B 3/18 (2006.01); H05B 3/48 (2006.01)

CPC (source: EP)

F23Q 7/001 (2013.01); H05B 3/48 (2013.01); H05B 2203/027 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE IT

DOCDB simple family (publication)

EP 1998595 A1 20081203; EP 1998595 A4 20140402; EP 1998595 B1 20160914; JP 5027800 B2 20120919; JP WO2007108491 A1 20090806; US 2009008383 A1 20090108; US 8013278 B2 20110906; WO 2007108491 A1 20070927

DOCDB simple family (application)

EP 07739197 A 20070320; JP 2007055754 W 20070320; JP 2008506323 A 20070320; US 16025007 A 20070320